William e



(No Model.)

W. R. PATTERSON.

GALVANIG BATTERY.

Patented Nov. 9, 1886.

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I niac, such as is commonly used in chloride-oil- UNrTnn STATES PATENT OFFICE,

AVILLIAM R. PATTERSON, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE VESTERN ELECTRIC COMPANY, OF SAME PLACE.

GALVAN l BATTERY.

SPCIFICATIQN forming part; of Letters Patent No. 352,486, dated November 9, 1886.

Application iilcd May 24., 1886. Serial No. 203,1l9. No model.)

To all whom it may concern.-

Beit known that I, WILLIAM R. PATTER- SON, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and use ful. Improvement in Galvanic Batteries, of which the following is a full, clear,concise, and exact description., reference being had to the accompanying drawing, forming a part of this specification.

My invention relates to galvanic batteries; and it consists, iirst, in using sufficient nonconducting oil upon the surface of theliquid of the battery to prevent chemical action upon the connecting-wires at the points where they are united with the elements of the battery.

My invention also consists in inclosing the chlorideofsilver element in a glass tube, said glass tube being open at both ends and preferably suspended above the bottoni of the jar, the opening at the top of the tubeA coming below the lower surface ofthe oil.

Iilerctol'ore it has been usual in chloride-ofsilver batteries to wrap the chlorideof-silver element with cloth orparchinentpaper to prevent contact with the zinc. Sometimes, also, a block of rubber has been placed between the elements for the saine purpose, the elements being bound together by rubber bands. When cloth or parchment has been used, in order to' examine the chloride-of-silver element ithas been necessary to reino ve it from the battery and unwind the wrapping. In the use of a block ot' rubber it is found that particles of silver or zinc becoming detached will fall and lodge upon the block of rubber, thus forming electrical connection between the two elements. Bythe use of a transparent tube, as herein described, the chloride of-silver elements may be readily inspected at any time without removal from thejar. This tribe being open at both ends allows the liquids to circulate freely and prevents connection between the silver and zinc elements.

In the accompanying drawing I have shown a sectional view of a cell of battery embodying my invention. I

The liquid a may be a solution of salammosilver batteries. The chlorideof-silver element b and the zinc element are suspended by their connecting-wires d and e, which pass through the corkv f inserted in the jar g. The connecting-wire d is of silver, and is preferably bent at its lower end to form a support for the glass tube h. The oilz' is suflicient to cover thejoint between the zinc element and its connecting-wire c,which, on account of the protectionof the non-conducting oil, may be of copper instead of silver, as heretofore required, and may be connected with the zinc by edge, to prevent galvanic action at the jnnction of dissimilar metals. If the junction between the copper wire and the zinc element were covered with thesal-aminoniac solution, there would be injurious local action between the copper and the zinc,and between the copper and the silver there would be injurious galvanic action. Even when silver wire has been used to connect with the zinc injurious local action has not been avoided. Non-con ducting oil therefore may be used to advantage with a silver connecting-wire, and in any case when -solder is used at the joint the non-con ducting oil is of great advantage. The joint between the connectingwire and the zinc element has also been painted or parafiined heretofore, butthe results have been unsatisfactory.

lt is found better to close the jar by the cork f or otherwise to prevent spilling the liquid. The jar, however, may be left open, in which case the wires are simply bent over the upper edge of the jar.

Having thus described my invention, I claim as new and desire to secure by Letters Patent l. The combination, with the chloride-of silver element of a galvanic battery, of a transparent non-conducting tube open at both ends inelosing said element, substantially as and for the purposes specied.

2. In a galvanic battery, the combination, with the zinc element,of a copper connectingwire, and an insulating-oil upon the surface of the liquid covering the joint between said IDO zine element und its copper Connecting-wire, silver element, the upper end of Said tube be- 1o as described. ing below the oil, substantially as and for the 3. In in galvzinie battery, the ehioride-osilpurpose Specified.

ver element and the ziue element and their re- In Witness whereof I hereunto Subscribe my 5 speebive conueeti11g-Wires7 in Combination With name this 20th day of May, A. D. 1886.

nou-conducting` oil ontiugupeu the liquid of WILLIAM R. PATTERSON.

the battery und covering the joint between the fituessesz zine element aud its connecting-Wire, and a GEORGE P. BARTON,

transparent tube surrounding the chloride-Of- F. H. MOCULLOCH. 

